Free tool
DNSSEC checker
Enter a domain to see whether its DNS is signed with DNSSEC - protecting your records from being tampered with in transit.
What this tells you
DNSSEC cryptographically signs your DNS so attackers can’t forge or tamper with your records in transit. This tool checks whether a domain returns signed, validated answers. DMARCER monitors DNSSEC alongside SPF, DKIM, DMARC and more – run a full check to see your complete posture.
What is DNSSEC? →
The basics, in plain English.
Continuous monitoring →
Watched around the clock.
All free tools →
DMARC, SPF, MTA-STS and more.